Hi, I discovered that an application send a request to my router to open an UDP port through upnp but this is unwanted !! How to find which application cause it in Vista? Currently I found an easy way to avoid it, I have disabled upnp in the router. Thanks in advance Christophe
Try intsalling some network monitoring program, like net limiter, or install a firewall and set it to alert you when ever a new program makes connection for the first time.